Pungency principle in chilli is

Solution (By Examveda Team)

The pungency principle in chilli is Capsaicin.
The spiciness in chili peppers is known as pungency and it is due to the presence of a group of compounds called capsaicinoids. Capsaicin is the major spice-producing alkaloid present in peppers.
It is a mixture of closely related compounds called capsinoids. Chief among these is the compound capsaicin, which is known by the chemical name: (E)-N-[(4-hydroxy-3-methoxyphenyl) methyl]-8-methyl-6-nonenamide.